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[SR-11219] enum string interpolation segfaults at runtime #53618

Open
tayloraswift opened this issue Jul 27, 2019 · 4 comments
Open

[SR-11219] enum string interpolation segfaults at runtime #53618

tayloraswift opened this issue Jul 27, 2019 · 4 comments
Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. crash Bug: A crash, i.e., an abnormal termination of software run-time crash Bug → crash: Swift code crashed during execution standard library Area: Standard library umbrella

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@tayloraswift
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Contributor

Previous ID SR-11219
Radar None
Original Reporter @Kelvin13
Type Bug
Environment

Swift version 5.1-dev (LLVM 200186e28b, Swift d71790b)
Target: x86_64-unknown-linux-gnu

Additional Detail from JIRA
Votes 0
Component/s Standard Library
Labels Bug, RunTimeCrash
Assignee None
Priority Medium

md5: 0d5ff5ec75523748bfca940f72919aff

Issue Description:

running this test file causes the program to segfault:

enum Feature:Equatable, CustomStringConvertible
{
    case kern(Bool) 
    case salt(Int)
    
    
    var description:String 
    {
        "\(self)"
    }
}

print(Feature.kern(true))
Stack dump:
0.  Program arguments: /home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/bin/swift -frontend -interpret enumcrash.swift -disable-objc-interop -color-diagnostics -module-name enumcrash 
1.  Swift version 5.1-dev (LLVM 200186e28b, Swift d71790b706)
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/bin/swift[0x4531bb4]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/bin/swift[0x452f80e]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/bin/swift[0x4531fc8]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x12890)[0x7fd6544bb890]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV15literalCapacity18interpolationCountABSi_SitcfC+0xe)[0x7fd650dc107e]
[0x7fd6548ed150]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
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/home/klossy/.swiftenv/versions/DEVELOPMENT-SNAPSHOT-2019-07-22-a/usr/lib/swift/linux/libswiftCore.so($ss26DefaultStringInterpolationV06appendC0yyxs06CustomB11ConvertibleRzlF+0x1a)[0x7fd650dec34a]
[0x7fd6548ed1fc]
[0x7fd6548ed370]
Segmentation fault (core dumped)
@theblixguy
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Seems to be causing an infinite loop in `public mutating func appendInterpolation<T>(_ value: T) where T: CustomStringConvertible`

@theblixguy
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cc brentdax (JIRA User)

@belkadan
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Stringification in an interpolation goes through CustomStringConvertible, so you've just put in infinite recursion. How could we diagnose this better, though?

@swift-ci
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swift-ci commented Dec 8, 2019

Comment by Jacob Mao (JIRA)

Can I try to fix this?

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@AnthonyLatsis AnthonyLatsis added the crash Bug: A crash, i.e., an abnormal termination of software label Dec 12, 2022
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. crash Bug: A crash, i.e., an abnormal termination of software run-time crash Bug → crash: Swift code crashed during execution standard library Area: Standard library umbrella
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@belkadan @theblixguy @tayloraswift @swift-ci @AnthonyLatsis